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发明名称
KNOCKOUT LINER FOR CONCRETE UTILITY VAULTS
摘要
申请公布号
US3543457(A)
申请公布日期
1970.12.01
申请号
USD3543457
申请日期
1969.01.28
申请人
BROOKS PRODUCTS INC.
发明人
OSCAR A. BUDLONG
分类号
E02D29/12;(IPC1-7):E02D29/12;E06B1/56
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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